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Solution: Single Number

Explore how to identify the single number in an array where every element appears twice except one, using bitwise XOR techniques. Understand the algorithm's linear runtime and constant space complexity, and learn to apply XOR properties to solve this common coding interview problem efficiently.

Statement

Given an array of integers, where every element appears twice except for one, find the element that occurs only once.

Note: The solution must have linear runtime and constant space complexity.

Constraints:

  • 11 \leq nums.length 103\leq 10^3
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